Weighing-scale.



L. C. WETZEL.

WEIGHING SCALE. APPLICATION msu Nuv.3o.19o6. www Nov. 21. :914.

1,262,725. Putenmd Apr.16,1918. 4

2 SHEETS-SHFEI 2.

- Q9 im@ 5o /34 6l 55% q* HW; f /Z/ d E 4 'WT v in@ l B6' A. /j :59 i d /55 ,if f3@ E@ A "in 65 L. C. WETZEL. WEIGHING SCALE. APPucmoN mw Nov. 3o. i905. www Nov. 2 1,262,725.

1. 19H. Patented Apr. 16, 1918.

2 SHEETS-SHEETI lable standards@ prefere ,UNITED STATES PATENT OFFICE.

LEWIS C. N ETZEL, OF TOLEDO, OHIO, ASSIGNOB, BY MESNE ASSIGNMENTS, TO TOLEDO SCALE COMPANY, OF TOLEDO, OHIO, A CORPORATION 0F NEW JERSEY.

WEIGHINGfSCALE.

Application med November 80, 1906, Serial No. 345,801.

To all whom it may concern: l

Be it knownthat I, Lewis C. Wnfrzan, residing at Toledo, in the county of Lucas'and State of Ohio, have invented certain new and useful Improvements in Weighin Scales, of which the following is a specication.

videsnot only' for uick weighing iunder such conditions but a crackers being usually marked uponuthe exterior so that the operator ofthejweighing apparatus can ascertain at a gian@ how muchtare'is to be providedfor. 1

with these and incidental objects in? View4 the-invention consists'in certain novel features of construction and combinations of parts the essential elements whereof arejrecited in the appended cla" -and a preferredV bodiment ofievliich is described form of em in detailv hereinafter and fully-illustrated -in the accorxipan drawings. i Of said awi Figli front elevation 'weighing apparatus constructed in accordance with the vention, the front 'of the' inelosing' brokenf away at one part tap-'disclose the pivotal mount g8 o f' the beain 2 rep1r'esentasx a hoizntalsection taken'sn 'stantially on the; line 2-4-2fof Fig.' lflooking downward' Fig. 3' is a Similar' view taken substantialiy `on the line 3-3of Fig 4 represents vcertain ofthe working detached and in front including a endulum w'ho'wei h is shownwit parts though parts carried by said cover-plate ap pear in v crojsections which o c'cu iesjthe said recess'Y of the pen ulum; and; platein perspective.v v

A bok-like casing 2 is sup Orted upon'suitbly Ihollow and lit-its Specicatlon p1' Letters Patent.

ldiate its ends within the casing 2 and bede a construction'of Weigh-l ing conveyors. -The present invention pro' o for accounting 'for v tare, the weight of the box in the case' of l r4'tliefront 2*l re 1 represents in` `tween them a tare-beam V21.

PmSQhiP-f- Y 0051.113 belng removed and the; 'tare-beam 'being elevation, these arts emi i out a certain coverpate which' closes a circular in saidweighted end with knife-edge bearings 26. resting upon Fig. -re resents in4 perspective a certain adjusta le wei htv c v with the fulcrum of g. 46 representsthe; said coveri i mediately over the fulerum Patented Apr. 16, 1918. Renewed November 27,' 1914. Serial No. 874,352.

upper part supports on the front side a dialp ate 4 bearing a, circular series of marginal gradations appropriately numbered. A scale-beam 5 is pivotally supported intermetween uprightsof a standard 6, said beam having knife-edge bearings 7 resting upon I blocks 8 within apertures of said upright-s.

9 which vproject from the short arm ofthe scale-beam support a shackle or hanger 10 which is in turn oonnectid, with a depending rod 11, the latter passing down through one .of the hollow Knife-edge .bearings standards '3 to connect with a platform'or other load-support1ng means.

The longer arm of the scale-beam 1s linked to the piston rod 12 of a dash-pot 13 suitably mounted in the other hollow standard 3. Thislonger armof the scale-beam vibrates between rubbei.`- buiers 14 secured to, arms 15 of a 75 bracket-, 16 fastened to the back of the cas- 'ing 2. A weight 17 is adjustably mountedy upon the endof this arm' of the scale-beam, tlm Alatter being vthreaded stem 18 to receive the weight and 'a'loekfnut 17 provided with af screw to maintain the adjustment, saicljvireight serving to secure., exactly the proper halanceof the scale-beam. The latter cames a pair of outwardly extending studs 19 which project lthrough slots 20 in of the casing and sup ort be,`

This eam is suitably graduated to show poundsand fractions of pounds and upon it slidesl a wei ht 22 to be employed in the usual manner or overbalancing the scale-beam to the extent -of tare.

' Across-bar 23 extendsfromiside to side I' ofthe casing 2 at the upper p ortion thereof and supports the outer bearm 23'* for a ndlxlum',the inner bearing 2A or thesame ing supported b a suita le bracket (Fig. 2) Securedto the hackV ofthe casing. This pendulum comprisesa 'fulcrum portion 25 '100 blocks of the abovefmentioned ,iuier andouter bearings so that the pendulum may freely trom v side toe side above the 'Scale m 5. The ulclflnnjo'f the pendulum .i is but slightly outofvertiealalinment the Scalebeamfan'd the1 from a point/imof the beam toward the end of the long 'arm ofthe latter and back so that no additional lateral space 41i() swingof the pendulum is ai clamp 29 for holding one end'of a Strap 30 which at its other end is clamped to a stirrup 3l adjustably engaged with the end of the shorter arm of the seule-beam. This strap overlies the periphery of a se ment 32 eccentric to the pendulum and a justable about a concentric boss 32 thereof, by means of set-screws 33, one entered through the arm 28 und the other through a depending arm 34 of the fulcrum poi-tion 25. The stem 35 of the pendulum is secured at its upper end in said arm.or boss 34 and at its lower e'nd in a weighted disk 36. The latter is formed in its vfrontlace with a circular recess 37 covered by a plate 38 secured in place by a centrally-located screw 39. Within the recess 37 is contained a weight 40 slotted as at 41 to embrace the screw 39 and grooved in its rear side as at 41' to engage studs 4:1h

-projecting from the base of the recess. Said weight is cross-slotted or grooved in its front side as at 42 to receive the inwardly (projecting end of a screw-stud 4 3 'secure' in the said plate 38. By loosening the screwr 39 'und rotatin the late 38 the weight 40 can be adjuste lengthwise the pendulum by reason of the eccentric action of the stud 43 against the sides of the groove 42. 4In this maiinerfthe counter-balancing properties of the pendulum Scan be accurately regulated without necessitating shifting of the ventire weighted end of the pendulum. It will -be seen that the construction described pro'- vides for' extreme nieet'y of adjustment in this regard.

There is adjustabl secured tothe'segment isposed lever `or beam.

32 a horzontally comprising a central portion 44 loosely embracing the boss 32*l and formedv with' arc; s102545. reoeivingscrews 46; a relatively vshortfarm 44* projecting to one side of the central art and carrying s? counter-balancing wjeigmt 48; and a relatively long arm 44" projecting oppositely from said central part' and extending to a pointabout midway the inclosng where itis jointed to a vertically extending rack 49., This' rack extends 'up behind the dial-platel and :engages ar small pinion 50 carried by an arbor 51' centrally located with referenceto the dial.'

Coperative engagement 'between the rack and pinion isl enforced-by a'weight 49'* su ported on a. stem which projects- -from e rack at or about its point o-u'nionwith the arm-44 The arborv 5 1 carries a pointer52 extending over the dial and having short oppositelyv extendin 'arm carrying a counter-balancing weig Vt-disk 53 and sup lemental weight-bars 53 adjpstably hel in bearing-arid 56 behind the. glass.'

' exactly n balance.

Vextensions at its'pivoted end,'one' extending 2."Inapparatu`s of the the combinaticnfof' a sca1ei beiim, su

ton.

place by a screw 53 entering the center of the weight-disk 53'. The arbor is supported at its rear end in an adjustable bearing 54 i at the back of the casing and at its forward `lugs of a bracket 61 secured to the back of the casing as shown in Fig. 2. The dial is preferably ari-an ed behind a glass 62 which may be rendere opaque at the middle to conceal the above -described mechanism, exposing to view only the dial and that portionofthe pointer which extends over the same. The glas'sis held in'a suitable collet 63 fastened to the casing and of such dimensions as to accommodate the pointer and its l'rim op "non will be obvious. The load' .l drawing' ownvvardly on the rod 11 tilts the scalefbeam and swings thependulum to the right as `the parts are viewed in Fig. 1. The resultant elevation of the arm pr extension 44'? causes advance 'of the pointer thesproper distance 4through'.coperat/ioii of the`I rack and'pinioii.' l'

It 'willbe seenthat with the j abov'efde scribed construction, which emplo eri heries of disks 58 journaled in a springs,;articles can readily be weig ed in A lquick succession without requiringany im termediate adjustments except in -the case of varyin tares. The tare-beam is at a coninc 'venient'p ace so that the operator standing in front of the apparatus andfreceiving the articles-over a latform from s eon'veyer can not only immediately-ascertain the= weight from the position taken up by the pointer but can rreadily. adjust the tare" weight as Aconditions require.

The separate adjustments mor-'in' members -of the structure provide found to greatly :facilitate putting the scales what is claimed is; i 1. In apparatus of the character the mmbimaonof agonie-beim. a-piyqai support therefor,y a pendulum withf lateal ont over 'one' ai'mof 'said and tli'e 'other extending fout" oveii the othero f the operating connections-between oneof -s'aid Vextensions,-ui'id one-"`end"o'thb'sca1e; v p

tions between 'the same andtlieio r'ofsad 125i'- beam, an' indicator-5? opera" tracto -arpivewi for diferent i hfor in ependent' regulation-andrthis beam, a connection from one of said arms to the scale beam, a dial, a pivoted pointer cooperating with the dial, a pinion upon the axis of the said dial, a rack in mesh with said pinion, and pivotally connected with the arm of said lever opposite to that connected to the scale beam, and a pendulum rigid with said lever, and adapted to swing in an are above the scale beam.

3. In apparatus of the character described, the combination of a scale-beam, a pivotal support therefor, a pendulum with lateral extensions at its pivoted end, one extending out over one arm of said beam and the other extending out over the other arm of-the beam, operating connections between one of saidl extensions and the scale-beam, an indicator, opcratin connections between the same and the ot er of said lateral extensions of the pendulum, and a tare-beam and weight mounted on the front side of the scale-beam.

4. In apparatus of the character described, the combination of a scale-beam, a pivotal support therefor intermediate its ends, a pendulum with lateral extensions at its pivoted end, one extending out over one' arm of said beam and the other extending out over the other arm of the beam, operating connections between one-of said extensionsand one end ofthe scalebeam, an indicator, operating connections between the same and the other of said lateral extensions of the pendulum, and a tare-.beam Vand weight 'mounted on .the front ,side .of the scalebeain and ,extending on opposlte sides of the latters'pivot. l

5. In apparatus of the character described, the combination ofa suitable inclosing casing for the" moving arts, a scale-beam extendi cross-wise t e casing a tarebeam secure to the scale-beam on 4e exterior of the casing and carrying a; Weight, a pendulum having lateral extensions at its pivotal end mounted directly above the scale beam and' swinging tliereover ,operating connections between o ne of said extensions and the scale-beam, a dial on the casing, a 'pointer working over the, dial, and operating-con nections between said pointer and the other lateral extension of the pendulum.` f..

6. In a scale, the combination of an inclosing casing, an indicating section c rried thereby, an index,'pendulum, and lev r f'ulcrumed within the inclosing casing, atare beam arranged in front of the casing and mounted upon s aid `lever, operative connections between the said lever, said pendulum and said index, and a connection on said lever for connecting -it to the 1platform.

7 In a scale, nn'inclosing casing, a lever fulcrumed 'within said casing, a' tare beam without the casing attached to said level', an index hand, a pendulum, connections from the pendulum to thc/index hand and connections between the lever and the pendulum.

8. A counterbalancing and weight indicating mechanism for a platform scale comprising a beam, a lever pivoted directly above the beam, a connection from one end of the lei/ er to the corresponding end of the beam, a connection on the same end of the beam for uniting the latter with the platform, an indicator, a connection from the other end of the lover to the indicator and a pendulum carried by and rigid with the lever.

9. A countcrlmlancingr and weight indicating mechanism for platform scales comprisinor a casing, a beam inclosed andfpivoted tlierein, a lever pivoted and inclosed within the casing directly above the beam, a pendulum .integral with the lever and swingmg above the beam, a connection from one end of the lever to the corresponding end of the beam, a means on the same end of the beam for connecting the same to a platform, an indicator arranged above the lever and a rack and pinion connection from the other arm of the lever to the indicator.

10. In a weighing scale, the combination of an inclosing casing, an indicator carried thereby, a lever fulcrumed Within the casing, means for connecting a platform thereto, a

second lever directly above the first said.

lever within the casing having a pendulum depending therefrom, a connection between vsaid levers, a tare beam arranged without the casing directly in front of and secured to one of said levers, and operative connections between one of said levers and the in- .dicatoiz K l1.' In a'weighing scale, the combination with an inclosing casing, an indicator carried thereby, a lever fulcrumed within the casing, platform connections on said lever, a second lever within the casing directly above the second said first-mentioned lever" having a pendulous weight securedfthereto, a connection between the second said levers onthe same side of thefulcrum of each, a tare beam arranged outside of the casing and Asecured to one of said levers, and oper- Iative connections between the uppermost of said levers and the indicator.

` 12. In a weighing scale, the combination of au inclosing casing, an indicator thereon, a scale beam mounted Within the casing, a pendulum, a second beam directly above said scale beam secured to and extending on opposite sides of said pendulum, operative connections betweenV one extensi n of the second said beam and the scale-beam, operative connections between the other extension of the s econd said beam and the indicator, and a tare beam arranged outside the casing and carried by one of said two first-mentioned beams.

1.3. In a weighing scale,'the combination 01' nn iuclosng casing, a. dial arranged thereun, n pointer eopelatn with sund dial, a Seule-Imam within the casm a pendulumI u bL-nm secured w und extening un o poslte f sidee of said pendulum, eounterbu nneing weights on one extension of seid beam, operutlve connecblons betweenv thls extension and the scale beam, operative connectlons be- 

